Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3ecee122207a85fac942ccc5ae7421f7bdba9c57a9f615b3696229f6ea5ad64' 
  AND token = 'HNUWiokbC/MID2dKf7IUolENlfpTTvsVJFKDNn4THA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}